Best troll card in mtg

[Opticarrow8]

What card has the effect that seems the trolliest?
Start it up, shoot

[MisterJH]

{iona, shield of emeria}

[All-Mana Mania]

Thragtusk. Because you can do many broken things with him. That he is a troller because e is playing peekaboo if you do resto angels too. Bye guys im giving you a 3/3. Oh hey im back 5 life. Later guys 3/3. Hi 5 life.

[The1337Magician]

 {Mistform Stalker} won a game for me once. Well, he conceded. It was very late at night and I changes the creature type ten times a turn. He conceded for the uselessness of the game.
To a higher extent:  {Greater Morphling}.

[Opticarrow8]

Great stuff goin on keep it up.

[Gorzo]

{Ertai, Wizard Adept} or any other repeatable counter is pretty troll-y.

{Knowledge Pool} is a big troll in multiplayer, as is {Hive Mind}.

[Keyeto]

Not necessarily in itself, but {Eye of the Storm} is a silly card. When combined with cards like {Decree of Annihilation} or {Temporal Extortion}. Things always get silly when Eye of the Storm hits the field.

[Opticarrow8]

Lol temporal extortion, oh the lulz i see in casual decks.

[The1337Magician]

Lol {temporal extortion}, oh the lulz i see in casual decks.

[Malleo]

Anything with annihilator

[MarduArrow]

 {Turn to Frog}

[Xaol]

{Scrambleverse}

[The1337Magician]

 {Warp World}

[Opticarrow8]

{Scrambleverse}

Oh wow that's wonderful

[InfinitiveDivinity]

{Warp World}

I remember this dude that played {Warp World} when M10 was dropped, it was a crazy deck.